A population of individuals about whom an epidemiologist wants to make inferences best describes a:
Target population
Source population
Study population
Affected population
Ans) Source population
Explaination:
- Source Population: The population from which the study subjects are drawn.
A population of individuals about whom an epidemiologist wants to make inferences best describes a: Target...
It is possible to use a random sample from a population to make statistical inferences about the entire population. True False
is the set of all individuals about whom information is desired. These are the individuals that we would study if we had all the time and all the money in the world. Quiz O of 1 questions saved 99+
Question 4 The difference between internal and external validity is best described as: Internal validity tells us if the inferences drawn from the study population are true of the study population whereas external validity tells us if the inferences drawn from the study population are true of the target population. Internal validity tells us if the inferences drawn from the population being studied apply to other populations whereas external validity tells us if the inferences drawn from the population being...
7. A researcher wants to conduct a survey about the experience of shopping at Target. He takes a random sample of 500 Target customers, where 370 respond to the survey (A) Determine the population in this study (B) Determine the sample in this study
Excel Freeform Activity: Inferences About Two Population Variances Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the automobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $170.88 and a sample of 23 automobiles 2...
Question 37 3 pts The figure illustrates a population of individuals that is under investigation. The circles indicate the areas where individuals are located, but not all individuals are captured. Red circles indicate individuals that were captured; blue circles indicate individuals that were not captured. Assume that individuals do not leave the area shown in the figure. During the summer, individuals are found only to the west of the river. During the winter, individuals are found only to the east...
Which choice best describes a simple random sample? O a selection of members of a population chosen because of their convenient accessibility and proximity O when a population is first sorted into groups that share a similar characteristic and individuals are randomly chosen from each of the groups O a selection of members from a population in such a way that every possible sample of the same size has an equal chance of being chosen O when a population is...
11.Which eating disorder best describes the following scenario? Jared wants to try out for the lead in the school play. Jared has a body type larger than his friends, but he is not medically viewed as overweight. However, he thinks that losing a few pounds will help him get the role. Before long his classmates start to make remarks about how good he looks. Enjoying the attention, he skips most lunches and begins to exercise daily. Before long he has...
Suppose a researcher wants to learn more about the mean attention span of individuals in some hypothetical population. The researcher cites that the attention span (the time in minutes attending to some task) in this population is normally distributed with the following characteristics: 20+_36. Based on the parameters given in this example, answer the following questions: a. What is the population mean (μ)? b. What is the population variance? c. Sketch the distribution of this population. Make sure you draw...
Question 16 Which of the following best describes a lead-time bias? Slow-progressing cases of disease with a better prognosis are more likely to be identified than faster-progressing cases of disease with a poorer prognosis Screening advances the time of diagnosis, making it difficult to evaluate survival Occurs when screening identifies an illness that would not have shown clinical signs before a person's death from other causes When the choice of study participants is healthier than the general population, making screening look good None of the answers...